YouTube audio vs.
LiveVideo audio

RightMark Audio Analyzer test

Testing chain: digital conversion from streamed FLV to WAV

YouTube: 22.05k mono, 46 kb/s MPEG-2 Layer 3
LiveVideo: 44.1k stereo, 96 kb/s MPEG-1 Layer 3


Don't take all this too seriously, because the RMAA test signal is
 not a good way to measure non-linear compressors.  One sign of
this is the +1.5 dB gain that the YouTube freq. resp. has, maybe
from envelope distortion on the initial calibration tone pulse.

Listening by ear to natural music samples, LiveVideo's sound
seems better to me, and it is stereo. YouTube is mono-only.

J. Beale Jan. 18 2007


Summary

Test YouTube.com LiveVideo.com
Frequency response (from 40 Hz to 15 kHz), dB: +1.60, -83.67 +0.33, -82.61
Noise level, dB (A): -400.0 -400.0
Dynamic range, dB (A): 95.0 96.7
THD, %: 0.0006 0.0010
IMD + Noise, %: 0.043 0.013
Stereo crosstalk, dB: -33.0 -364.0



Frequency response

Spectrum graph


Noise level

Spectrum graph


Dynamic range

Spectrum graph


THD + Noise (at -3 dB FS)

Spectrum graph


Intermodulation distortion

Spectrum graph


Stereo crosstalk

Spectrum graph



This report was generated by RightMark Audio Analyzer 5.4